Remarks

In addition to properties, MouseEventArgs also has several specialized methods including GetPosition. The coordinates where the mouse event occurred are obtained by calling the GetPosition method on the MouseEventArgs object, rather than by getting a value for "X" or "Y" properties of MouseEventArgs. This is because GetPosition provides the ability to get a coordinate offset from a specified object, which can be useful for clarifying the coordinate reference frame for a particular sender of the event. For details, see Silverlight Mouse Support.